. >>> afghanistan could be close to a political crisis over a disputed election. and the u.s. attorney general is warning about westerners fighting in syria. those are some of the foreign policy challenges facing president obama tonight. james rosen has the roundup. >> reporter: a suicide bombing in afghanistan reportedly killed four nato soldiers. at the white house, nato's secretary-general, after a meeting with president obama, told fox news instability in afghanistan, including discord over the results of last month's election, could jeopardize western security commitments. >> the fact is, we will be faced with major problems if we do not have a new president inaugurated by the time of our summit, because in that case, we will probably not have signed the necessary security agreements and without security agreements, there will be no deployment. >> reporter: with the israeli-palestinian conflict intensifying and isis in iraq, the obama administration is hoping to make an impact in the theater where isis gained its strength, with deliveries of weapons to the so-called vette